Stair simulator



FIG. 1 is a perspective view of a stair simulator showing our newdesign;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side elevational view shown at a larger scale thereof;

FIG. 5 is a left side elevational view shown at a larger scale thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown in the drawings illustrate portions of the stairsimulator that form no part of the claimed design.

CLAIM The ornamental design for a stair simulator, as shown anddescribed.